US7898135B2 - Hybrid permanent magnet motor - Google Patents

Hybrid permanent magnet motor Download PDF

Info

Publication number
US7898135B2
US7898135B2 US12/044,797 US4479708A US7898135B2 US 7898135 B2 US7898135 B2 US 7898135B2 US 4479708 A US4479708 A US 4479708A US 7898135 B2 US7898135 B2 US 7898135B2
Authority
US
United States
Prior art keywords
stator
electro
mechanical device
rotor
flux
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US12/044,797
Other languages
English (en)
Other versions
US20090160391A1 (en
Inventor
Charles J. Flynn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QM Power Inc
Original Assignee
QM Power Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by QM Power Inc filed Critical QM Power Inc
Priority to US12/044,797 priority Critical patent/US7898135B2/en
Publication of US20090160391A1 publication Critical patent/US20090160391A1/en
Assigned to QM POWER, INC. reassignment QM POWER, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FLYNN, CHARLES J.
Application granted granted Critical
Publication of US7898135B2 publication Critical patent/US7898135B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/38—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary
    • H02K21/44—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/02—Synchronous motors
    • H02K19/10—Synchronous motors for multi-phase current
    • H02K19/103—Motors having windings on the stator and a variable reluctance soft-iron rotor without windings

Definitions

  • Apparatus and methods for providing a permanent magnet electro-mechanical device that functions as a motor or generator are disclosed.
  • This controller approach results in a counter productive exercise for the most part because while permanent magnets were used to reduce motor size and weight, in order to optimize efficiency at peak power, the motor size and weight is increased to that of motors using copper windings. By having to resize the motor, some of the benefits of using permanent magnets in the motor are negated.
  • This disclosure relates to a permanent magnet electro-mechanical device that functions as a motor or generator that uses control coils, a shaft mounted salient pole rotor, bearings and structural components and a novel arrangement of two or more permanent magnets placed in the stator portion.
  • This construction exhibits low cogging forces, high efficiency and high power density.
  • the rotor and stator pole geometries and spacing relationships can be arranged to operate as either a single phase or multi phase motor.
  • an electro-mechanical device includes a rotor having a plurality of poles arranged about a central axis of rotation, and a stator including a plurality of stator segments arranged on a circle that circumscribes the rotor and defining a magnetic flux path, said stator also including a plurality of permanent magnets, each of which has north and south pole faces and is positioned between a different pair of stator segments among the plurality of stator segments, wherein each stator segment has at least two poles extending toward the rotor, and wherein the permanent magnets are serially arranged along the magnetic flux path defined by the plurality of stator segments with pole faces arranged south to north.
  • an electro-mechanical device in another aspect, includes a rotor with a central axis of rotation and a first and a second pole, a stator enclosing the rotor, the stator including: at least two stator segments, a first permanent magnet having a north pole and a south pole and disposed with the north pole adjacent to a first stator segment of the at least two stator segments, and a second permanent magnet having a north pole and a south separated from the first permanent magnet by the first stator segment, wherein the first permanent magnet and the second permanent magnet provide a magnetic flux and this magnetic flux passes through the first stator segment.
  • an electro-mechanical device in yet another aspect includes a first means for providing a plurality of poles arranged about a central axis of rotation, and second means for providing a plurality of stator segments arranged on a circle that circumscribes the first means and defining a magnetic flux path, said second means also including a plurality of magnetic means, each of which has north and south pole faces and is positioned between a different pair of stator segments among the plurality of stator segments, wherein each stator segment has at least two poles extending toward the first means, and wherein the magnetic means are serially arranged along the magnetic flux path defined by the plurality of stator segments with pole faces arranged south to north.
  • FIG. 1 is a diagram illustrating a permanent magnet electro-mechanical device
  • FIG. 2 is a diagram illustrating flux in the stators of the permanent magnet electro-mechanical device
  • FIG. 3 is a diagram illustrating certain control coils energized to create a magnetic flux in the permanent magnet electro-mechanical device
  • FIG. 4 is a diagram illustrating a displaced permanent magnet flux in the permanent magnet electro-mechanical device
  • FIG. 5 is a diagram illustrating an intermediate salient pole rotor position flux in the permanent magnet electro-mechanical device
  • FIG. 6 is a diagram illustrating a rotor position where the poles are aligned in the permanent magnet electro-mechanical device
  • FIG. 7 is a diagram illustrating certain control coils producing an increased amount of magnetic flux in the permanent magnet electro-mechanical device
  • FIG. 8 is a diagram illustrating wiring and control of the electro-mechanical device
  • FIG. 9 is a diagram illustrating an electro-mechanical device constructed with five stator segments
  • FIGS. 10 , 11 , and 12 are diagrams illustrating a control coil switching sequence in a permanent magnet electro-mechanical device
  • FIG. 13 is a diagram illustrating wiring and control of a multi-phase electro-mechanical device
  • FIG. 14 is a diagram illustrating the electro-mechanical device setup to function as a generator
  • FIGS. 15 , 16 and 17 are diagrams illustrating a pole wound electro-mechanical device.
  • FIGS. 18 and 19 are diagrams illustrating a permanent magnet flux control method.
  • An apparatus, method and means for providing a permanent magnet electro-mechanical device that functions as a motor or generator are disclosed.
  • the permanent magnets in the electro-mechanical device are arranged in the stator in an attracting manner. This can provide a one hundred percent field weakening when no current is flowing in the phase windings and allow control of the electro-mechanical device through the phase windings.
  • the arrangement additionally provides low to no cogging torque or back electromotive force because the magnetic flux of the permanent magnets generally does not act across the air gap between the rotor and stator. A small amount of fringing flux may be present in device operation, but this does not produce the back electromotive force that is present in typical permanent magnet motors.
  • the arrangement of magnets and phase windings also provides high efficiency operation of the electro-mechanical device by allowing phase winding flux to be applied in conjunction with permanent magnet flux to the torque produced.
  • FIG. 1 shows the arrangement of a magnetic circuit for single phase operation in an embodiment of the electro-mechanical device.
  • the electro-mechanical device of FIG. 1 includes six stator segments 1 , six magnets 2 , six control coils numbered 4 through 9 wound on each stator segment 1 and a nine salient pole rotor 3 .
  • the six magnets 2 each have a north and south face or pole.
  • the nine salient pole rotor includes nine poles that protrude slightly from the rotor. It should be understood that there is no limit to the number of poles and the number of poles can be odd or even.
  • magnet 2 is placed adjacent to and between each of the stator segments 1 to form a continuous annular ring.
  • Each of the magnets 2 is separated by a stator segment and the magnets 2 are arranged in a manner where their magnetic poles are opposing. That is, when traveling around the annual ring clockwise, the magnet poles of the magnets are arranged in a south north, south north, south north . . . south north fashion.
  • arranging the permanent magnets 2 in this manner results in the permanent magnet 2 's magnetic flux 10 through 15 being completely contained in the stator segments 1 .
  • the magnetic flux 10 travels through the stator segments along a magnetic flux path.
  • each stator segment 1 forms two stator poles in FIG. 1 , and the two stator poles are joined by a bridge section.
  • the bridge section is where control coils 4 through 9 are wound in the embodiment of FIG. 1 .
  • a rotational torque is created by energizing alternate control coils in a timed manner.
  • the timing can be controlled by a microprocessor, for example, that selects which coils to energize and for how long based on information, such as the speed of the rotor and slip in the rotor.
  • Energizing alternate control coils in a timed manner creates a magnetic flux that acts on the poles of the salient pole rotor to produce rotation of the rotor.
  • control coils 4 , 6 and 8 and control coils 5 , 7 and 9 are alternatively energized.
  • the energizing of the control coil creates a magnetic flux that opposes the flux of the permanent magnets 2 located adjacent to the energized control coil.
  • This opposing flux produced when current flows in a control coil displaces an equal amount of flux generated by the adjacent permanent magnets 2 .
  • the amount of permanent magnet flux displaced can be a portion of the permanent magnet's flux or all of the permanent magnet's flux, depending upon the amount current flowing through the coil and the amount of flux this current produces.
  • FIG. 3 shows control coils 4 , 6 and 8 energized to create a magnetic flux that opposes the magnetic flux produced by the permanent magnets adjacent to the stator segments 1 on which these control coils are wound.
  • the control coils are energized when the stator poles of a stator segment 1 and the poles of the salient pole rotor are in an unaligned position.
  • the magnetic flux created by control coils 4 , 6 , and 8 opposes and displaces the magnetic flux 11 , 13 and 15 produced by the adjacent permanent magnets 2 .
  • the adjacent permanent magnets' 2 flux is displaced into the unaligned poles of the salient pole rotor 3 . This displaced permanent magnet flux creates a force that acts between the unaligned stator segment 1 poles and the salient rotor 3 poles creating a rotational torque that acts to bring the poles into alignment as shown in FIG. 4 .
  • control coils 4 , 6 , and 8 are de-energized. This allows the displaced flux from the permanent magnets 2 adjacent to each end portion of the stator segment 1 on which the control coils 4 , 6 and 8 are wound to return to a contained state in stator segments 1 .
  • the flux is contained within stator segments 1 (as shown in FIG. 2 )
  • generally any force that was creating a rotational torque on the salient pole rotor 3 is removed.
  • This turning of rotor places the poles of the salient pole rotor 3 out of alignment with respect to the poles formed by the stator segments 1 on which control coils 5 , 7 and 9 are wound. Further rotation can be caused by energizing control coils 5 , 7 and 9 while keeping coils 4 , 6 and 8 de-energized.
  • the magnetic flux created by control coils 5 , 7 and 9 opposes and displaces the magnetic flux 10 , 12 and 14 produced by the adjacent permanent magnets 2 .
  • the displaced permanent magnet flux 10 , 12 and 14 then acts on the unaligned poles of the salient pole rotor 3 creating a rotational torque that acts to bring the poles into alignment as shown in FIG. 6 .
  • the amount of permanent magnet flux that is displaced is limited to the inherent amount of flux produced by the permanent magnet.
  • the inherent amount of permanent magnet flux displaced can be less if less opposing control coil flux is provided.
  • the total amount of flux acting on the salient pole rotor can be greater than the inherent amount of flux produced by the permanent magnet. This is accomplished by energizing the control coil to produce a flux that is greater than the flux produced by the permanent magnet.
  • the flux leaving the poles formed by a stator segment 1 and entering the poles of the salient pole rotor 3 can be the sum of the permanent magnet's flux plus the coil's flux that is greater than the permanent magnet's flux.
  • FIG. 7 demonstrates a case where control coils 5 , 7 and 9 are producing a magnetic flux 10 , 12 and 14 in an amount that is double that of the permanent magnets.
  • FIG. 8 shows a wiring diagram and a controller in an embodiment of the electro-mechanical device.
  • the control coils are wired in two groups: group 16 including control coils 16 - a , 16 - b and 16 - c and group 17 including control coils 17 - a , 17 - b and 17 - c .
  • each coil within a group is shown electrically coupled in parallel, but the coils may also be coupled electrically in series.
  • the control coils have a winding ‘start’ lead and a winding ‘end’ lead. The direction the permanent magnets 2 are inserted determines how the start and end leads are connected when wiring the electro-mechanical device.
  • the first of the two leads is coupled to a common bus 18 , and a bus terminal of common bus 18 is connected to the positive connection of an electrical power source.
  • the second lead of coils 16 - a , 16 - b and 16 - c is coupled to bus 20 .
  • the second lead of coils 17 - a , 17 - b and 17 - c is connected to bus 19 .
  • Buses 19 and 20 are each coupled to power switches 22 and 21 respectively.
  • Power switches 21 and 22 may be any electrical or semiconductor switch such as a power metal-oxide-semiconductor field effect transistor (MosFet), an insulated gate bipolar transistor (IGBT), power junction field effect transistors, or Mos-controlled thyristors, for example.
  • Gates 23 and 24 control the operation of switches 21 and 22 respectively.
  • a control signal is provided to gate of the power switch, and the control signal determines whether the power switch is turned on (in a conducting state) or turned off.
  • Controller 25 provides a control signal which can be a bias or control voltage/current.
  • the controller 25 supplies the control signal to power switch 21 or 22 based on the angular position of the poles on rotor 3 relative to the poles on stator segment 1 .
  • a power switch When a power switch is turned on, a unidirectional current flows from bus terminal 28 , through the control coils coupled to that bus, and out of terminals 27 .
  • Terminals 27 are coupled to a negative connection of the electrical power source.
  • Various sensors 26 are coupled to controller 25 to determine rotor position and other motor operating parameters.
  • the other motor operating parameters that can be controlled are voltage and current, for example.
  • Sensors 26 can be implemented using a Hall Effect sensor or using optical or circuit components such as op amp comparators to supply control signals to controller 25 .
  • FIG. 9 shows a multiphase construction of the magnetic circuit in an embodiment of the electro-mechanical device.
  • the electro-mechanical device of FIG. 9 includes five stator segments 28 , five magnets 29 , a four salient pole rotor 30 , five control coils numbered 31 through 35 that are wound on each stator segment 28 .
  • the theory of operation remains the same as with the single phase construction.
  • control coils 31 though 35 are energized in a sequence to displace the permanent magnet's 29 flux into the unaligned salient pole rotor poles. As explained above, this produces a force to pull the poles into alignment and results in a rotational torque on the salient pole rotor 30 .
  • FIGS. 10 , 11 and 12 show a control coil switching sequence for a multiphase electro-mechanical device in an embodiment that produces continuous rotation of the salient pole rotor 30 .
  • FIG. 10 includes permanent magnet flux 36 and coil magnetic polarity 37 .
  • the coil magnetic polity 37 shows how control coil 32 is energized in FIG. 10 to move permanent magnet flux 36 into rotor 30 .
  • the control coils are energized in sequence of 32 - 33 , 33 - 34 , 34 - 35 , 35 - 31 then 31 - 32 in this embodiment.
  • the electro-mechanical device is a five phase device. The sequential energizing creates a rotating magnetic field directed into the salient pole rotor 30 to produce a rotational torque.
  • One advantage of multi-phase electro-mechanical devices such as the embodiment of FIGS. 9-12 , is that multi-phase electro-mechanical devices can be designed to run off alternating current.
  • FIG. 13 shows a wiring diagram and a controller a multi-phase embodiment of the electro-mechanical device.
  • the control coils have a winding ‘start’ lead and a winding ‘end’ lead.
  • the direction the permanent magnets 29 are inserted determines how the start and end leads are connected when wiring the electro-mechanical device.
  • the first of the two leads is coupled to a common bus 42 that includes a bus terminal, which is coupled to the positive connection of an electrical power source.
  • the second of the two leads of the control coils is coupled by a bus to an individual power switch, of power switches 38 .
  • Controller 39 provides a control signal which can be a bias or control voltage/current.
  • the controller 39 supplies the control signal to power switches 38 based on the angular position of the poles on rotor 30 relative to the poles on stator segment 28 .
  • a power switch When a power switch is turned on, a unidirectional current flows from bus terminal 42 , through the control coils coupled to that bus, and out of terminals 41 .
  • Terminals 41 are coupled to a negative connection of the electrical power source.
  • Various sensors 40 are coupled to controller 39 to determine rotor position and other motor operating parameters.
  • the other motor operating parameters that can be controlled are voltage and current, for example.
  • Sensors 40 can be implemented using a Hall Effect sensor or using optical or circuit components such as op amp comparators to supply control signals to controller 39 .
  • FIG. 14 shows the embodiment of FIG. 1 operating as a generator.
  • the electro-mechanical device includes stator segments 43 , permanent magnets 44 , salient pole rotor 45 , coils 46 through 51 , magnetic flux 52 , displaced flux 53 , buses 54 though 57 , generator control unit (GCU) 58 , and load 59 .
  • GCU generator control unit
  • the control coils 31 though 35 are energized with a potential to displace a controlled or steady state amount of magnetic flux 52 from the magnetic flux path across the air gap onto the salient pole rotor poles.
  • the energy used to displace the magnetic flux 52 of permanent magnets 44 from a magnetic flux path into the rotor is less for a coil on a stator segment whose poles are in alignment with salient pole rotor 45 .
  • a stator segment whose poles are unaligned with the salient pole rotor 45 uses more energy to displace magnetic flux 52 .
  • a varying air gap reluctance induces a voltage into the coils 46 through 51 .
  • the electrical power produced is the difference of the additional potential minus the potential used to displace the permanent magnet flux.
  • group 1 coils 46 , 50 and 48 are wired electrically in series and group 2 coils 47 , 51 and 49 are wired electrically in series and the two groups of series connected coils are connected to the GCU 58 through buses 54 through 57 .
  • the GCU supplies the initial potential to the coils to displace all or any portion of the permanent magnet flux 52 into the rotor 45 as shown by displaced flux 53 to initiate generator functionality.
  • the GCU can also control the balance of the power flowing to the load 59 from the two coil groups.
  • the coil groups may alternatively be connected in parallel or series parallel combinations.
  • FIG. 15 shows an embodiment of the electro-mechanical device where control coils are wound on the salient poles of a stator segment.
  • the electro-mechanical device of FIG. 15 includes stator segments 60 , permanent magnets 61 , control coils 62 through 73 , and rotor 74 .
  • Control coils 62 through 73 are each wound on a salient pole of a stator segment 60 .
  • Permanent magnets 61 separate each stator segment 60 and are arranged along a magnetic flux path. In FIG. 15 the stator segments circumscribe rotor 74 and the magnetic flux path passes through stator segments 60 .
  • FIG. 16 shows the motor operation of the embodiment of FIG. 15 .
  • Motor operation is implemented by energizing the control coils 62 through 73 to produce a flux polarity 77 .
  • Flux polarity 77 couples with the permanent magnet flux 76 pulling this flux through the stator segment's salient pole.
  • the ends of the stator segment's 60 poles have opposite magnetic polarities as determined by the coils magnetic flux polarity 77 .
  • the stator segment's poles create a flux path from a first magnet through the stator segment coil to the rotor and back through a second stator segment coil to a second magnet.
  • magnetic flux 76 traveling from a first magnet 61 through coil 63 , across an air gap to rotor 74 , through rotor 74 , across a second air gap, though coil 62 , and through a second magnet 61 on the other side of a stator segment 60 .
  • FIG. 17 shows how additional flux can be passed through the rotor of the electro-mechanical device.
  • This additional flux can be created by producing a quantity of flux 78 that exceeds the permanent magnet's flux 76 .
  • the excess control coil flux adds to the permanent magnet's flux 76 across the air gap between the stator segment's 60 poles and the poles on the rotor 74 .
  • This additional flux adds to the torque produced as a square of the total flux in the air gap.
  • FIGS. 18 and 19 depict a permanent magnet flux control method used in the electro-mechanical device in an embodiment.
  • the device shown in FIGS. 18 and 19 includes an upper and lower flux path 79 , two armatures 80 and 81 , magnets 82 and 83 , and control coils 84 and 85 .
  • the magnets 82 and 83 are positioned with attracting poles adjacent to the upper flux path.
  • control coils 84 and 85 When control coils 84 and 85 are not energized, the flux 86 and 87 from the permanent magnets 82 and 83 traverse the upper and lower flux paths 79 .
  • the control coils 84 and 85 When the control coils 84 and 85 are energized, they produce a flux that opposes the flux from magnets 82 and 83 .
  • the materials used for the rotor and stator segments of the electro-mechanical device can be composed of a magnetically soft material.
  • Magnetically soft materials are materials that are easily magnetized when a magnetizing field is applied and retain substantially no magnetic field once the magnetizing force is removed.
  • This magnetically soft material can be a solid material, but to reduce eddy currents and core losses the magnetically soft material can be laminated or used in particle form with a bonding material or after sintering.
  • Many different magnetically soft materials can be used, and the various embodiments of the electro-mechanical device are not limited to a particular magnetically soft material.
  • the materials used for the permanent magnets such as the permanent magnets 2 are composed of a magnetically hard material.
  • Magnetically hard materials are materials that sustain a substantial magnetic field after a magnetizing field has been applied and then removed.
  • the various embodiments of the electro-mechanical device are not limited to any particular magnetically hard material.
  • the coils are referred to as control coils in this description since they control the flux from permanent magnets, but they could also be referred to as phase coils or just coils that carry an electrical current to produce a magnetic field. It should be understood that there is no limit to the number of poles used greater than two and that an odd or even amount of poles can be used. Also stator segments can form more than two stator poles in some embodiments.
  • the GCU can be implemented with circuits, a microprocessor, or mechanically depending on the embodiment.
  • the power switches of the various embodiments may be any electrical or semiconductor switch such as a power metal-oxide-semiconductor field effect transistor (MosFet), an insulated gate bipolar transistor (IGBT), power junction field effect transistors, or Mos-controlled thyristors, for example.
  • MosFet power metal-oxide-semiconductor field effect transistor
  • IGBT insulated gate bipolar transistor
  • Mos-controlled thyristors for example.
  • Other embodiments are within the scope of the following claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
US12/044,797 2007-03-07 2008-03-07 Hybrid permanent magnet motor Active 2029-03-25 US7898135B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US12/044,797 US7898135B2 (en) 2007-03-07 2008-03-07 Hybrid permanent magnet motor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US89349607P 2007-03-07 2007-03-07
US12/044,797 US7898135B2 (en) 2007-03-07 2008-03-07 Hybrid permanent magnet motor

Publications (2)

Publication Number Publication Date
US20090160391A1 US20090160391A1 (en) 2009-06-25
US7898135B2 true US7898135B2 (en) 2011-03-01

Family

ID=39738829

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/044,797 Active 2029-03-25 US7898135B2 (en) 2007-03-07 2008-03-07 Hybrid permanent magnet motor

Country Status (2)

Country Link
US (1) US7898135B2 (fr)
WO (1) WO2008109834A1 (fr)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090091198A1 (en) * 2007-10-05 2009-04-09 Rolls-Royce Plc Flux-switching machine
WO2012123937A1 (fr) * 2011-03-16 2012-09-20 Concept & Design Ltd. Moteur électrique push-pull planétaire
US8344843B2 (en) 2010-09-03 2013-01-01 Solid State Magnetics Corporation Flux transfer device
US20130049494A1 (en) * 2011-08-22 2013-02-28 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US20130069450A1 (en) * 2011-09-16 2013-03-21 Persimmon Technologies, Corp. Robot Drive With Passive Rotor
US20130162061A1 (en) * 2011-12-23 2013-06-27 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US20130214623A1 (en) * 2011-08-22 2013-08-22 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US20140021809A1 (en) * 2012-07-18 2014-01-23 Ut-Battelle, Llc Reluctance motor
US20140375149A1 (en) * 2012-02-10 2014-12-25 Takaitsu Kobayashi Linear power generator
US20160006304A1 (en) * 2013-02-22 2016-01-07 Osaka University Magnetic wave gear device
US20160028276A1 (en) * 2014-07-22 2016-01-28 General Electric Company System and method for preventing stator permanent magnet demagnetization during vacuum pressure impregnation
US9502952B2 (en) 2012-10-12 2016-11-22 Persimmon Technologies, Corp. Hybrid motor
WO2017180216A1 (fr) * 2016-04-14 2017-10-19 Boaventura-Delanoe Paul Moteur électrique et générateur
US10404135B2 (en) * 2015-02-10 2019-09-03 Indiana University Research And Technology Corporation High torque density electric motor and/or generator
US10476354B2 (en) 2011-09-16 2019-11-12 Persimmon Technologies Corp. Robot drive with isolated optical encoder
US10523098B1 (en) 2014-12-01 2019-12-31 Dale Bowen Progressive magnetic rotation motor
US10538000B2 (en) 2011-09-16 2020-01-21 Persimmon Technologies Corporation Robot with linear drives and rotary drive
US10608509B2 (en) 2016-10-17 2020-03-31 Roul Delroy MARTIN Rotatable electric machines
EP3687049A1 (fr) * 2019-01-24 2020-07-29 Norbert Isele Moteur, ensemble rotor-stator et utilisation permettant de faire fonctionner un moteur
US11682945B2 (en) 2016-02-15 2023-06-20 Indiana University Research And Technology Corporation High torque density electric motor/generator with rolling element
US11769680B2 (en) 2014-01-21 2023-09-26 Persimmon Technologies Corporation Substrate transport vacuum platform
US11967871B2 (en) 2017-09-15 2024-04-23 University Of Utah Research Foundation Cogging-torque actuator

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9018815B2 (en) * 2009-02-14 2015-04-28 Tohoku University Generator
US10340778B2 (en) * 2009-10-19 2019-07-02 Qm Power, Inc. Parallel magnetic circuit motor
WO2011139627A1 (fr) * 2010-04-26 2011-11-10 Ramu, Inc. Machines à reluctance commutée à haute densité d'énergie et à excitation hybride
US8410653B1 (en) 2010-06-21 2013-04-02 Christopher Moore Magnetic lighting circuit and mounting system
US8575871B1 (en) 2010-07-23 2013-11-05 Christopher Moore Modular component electric machine
GB2489423A (en) * 2011-03-25 2012-10-03 Technelec Ltd Flux switching electrical machine with slotted rotor
CN102184809B (zh) * 2011-03-30 2015-11-25 戴珊珊 电激励永磁开关和电激励永磁开关磁阻电动机及电激励方法
GB2491194A (en) * 2011-05-27 2012-11-28 Norbar Torque Tools Torque tool with synchronous reluctance motor
AT511480B1 (de) * 2011-05-31 2014-02-15 Johannes Kepler Uni Linz Elektrische maschine mit einem magnetisch gelagerten reluktanzläufer
US20120306298A1 (en) * 2011-06-02 2012-12-06 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US8531075B1 (en) 2011-06-21 2013-09-10 Christopher Moore Magnetic electrical contact system
BR112014003995A2 (pt) * 2011-08-31 2017-03-07 Siemens Ag mecanismo de engrenagem magnética e método para operação do mesmo
KR20130035707A (ko) * 2011-09-30 2013-04-09 삼성전기주식회사 스위치드 릴럭턴스 모터
US10326322B2 (en) * 2012-08-20 2019-06-18 Rensselaer Polytechnic Institute Double-rotor flux-switching machine
JP6117574B2 (ja) * 2013-03-05 2017-04-19 山洋電気株式会社 誘導子型回転モータ
US9729036B2 (en) * 2013-03-15 2017-08-08 Hamilton Sundstrand Corporation Permanent magnet machine for integrated starter generator
JP2015142422A (ja) * 2014-01-28 2015-08-03 本田技研工業株式会社 ブラシレス直流モータ、および、その制御方法
CN104539125B (zh) * 2015-01-19 2017-07-11 上海电机学院 一种混合励磁磁通切换电机
US10772578B1 (en) * 2015-05-15 2020-09-15 Kollmorgen Corporation Large diameter rotary motor driven by flux-switching
WO2017147565A2 (fr) * 2016-02-26 2017-08-31 Fait Mitchell Dispositif de conversion d'énergie
CN106100272B (zh) * 2016-06-20 2018-06-01 江苏大学 一种少稀土齿轭互补的双凸极磁通可控电机
CN107888044A (zh) * 2017-12-13 2018-04-06 浙江工业大学 大力矩环形气隙永磁式力矩马达
CN107910963A (zh) * 2017-12-13 2018-04-13 浙江工业大学 表贴式电磁铁
UA124412C2 (uk) * 2017-12-22 2021-09-15 Євгеній Віталійович Мушинський Контрроторний синхронний електромеханічний перетворювач
EP3683939A1 (fr) * 2019-01-15 2020-07-22 Hamilton Sundstrand Corporation Détection et surveillance de l'état d'un moteur à commutation de flux
WO2020204652A1 (fr) * 2019-04-03 2020-10-08 삼성전자주식회사 Moteur de commutation de flux et dispositif de nettoyage l'utilisant
CN112491231B (zh) * 2020-12-31 2022-08-02 山东理工大学 一种混合励磁凸极分块转子开关磁通电机
CN113178962B (zh) * 2021-05-20 2023-02-24 河北工业大学 一种模块化转子混合励磁磁通反向电机
CN113178961B (zh) * 2021-05-20 2023-06-16 河北工业大学 一种轴向模块化磁通反向电机

Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678352A (en) 1970-11-06 1972-07-18 Gen Electric Compatible permanent magnet or reluctance brushless motors and controlled switch circuits
US4093905A (en) 1976-06-01 1978-06-06 Teletype Corporation Stepping motor using extended drive pulses
US4516048A (en) 1983-09-29 1985-05-07 The Superior Electric Company Stator with nonuniformly spaced teeth for rotating electromagnetic device
US4910475A (en) 1989-03-28 1990-03-20 Linex Technology Corporation Pole grouping for stepping motor
US4945268A (en) 1987-12-26 1990-07-31 Hitachi, Ltd. Permanent magnet type linear pulse motor
US5332488A (en) 1991-08-27 1994-07-26 Hitachi Magnetics Corporation Surface treatment for iron-based permanent magnet including rare-earth element
US5631512A (en) 1994-04-13 1997-05-20 Toyota Jidosha Kabushiki Kaisha Synchronous motor having magnetic poles of permanent magnet and magnetic poles of a soft magnetic material
US5672925A (en) * 1992-08-06 1997-09-30 Electric Power Research Institute, Inc. Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings
US5825112A (en) 1992-08-06 1998-10-20 Electric Power Research Institute, Inc. Doubly salient motor with stationary permanent magnets
US6013963A (en) * 1999-02-05 2000-01-11 Emec Energy, L.L.C. High efficiency electro-mechanical energy conversion device
US6051904A (en) 1997-10-07 2000-04-18 Valeo Equipments Electriques Moteur Rotary electric machine, especially an alternator for a motor vehicle
US6057622A (en) * 1999-01-21 2000-05-02 Lockhead Martin Energy Research Corporation Direct control of air gap flux in permanent magnet machines
US6246561B1 (en) * 1998-07-31 2001-06-12 Magnetic Revolutions Limited, L.L.C Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same
US6340857B2 (en) 1998-12-25 2002-01-22 Matsushita Electric Industrial Co., Ltd. Motor having a rotor with interior split-permanent-magnet
US6373162B1 (en) * 1999-11-11 2002-04-16 Ford Global Technologies, Inc. Permanent magnet electric machine with flux control
US6410726B1 (en) 2000-01-12 2002-06-25 Tularik Inc. Arylsulfonic acid salts of pyrimidine-based antiviral
US6426577B1 (en) 1998-05-01 2002-07-30 Nisso Electric Corporation Thrust-controllable rotary synchronous machine
US6507257B2 (en) * 2000-03-31 2003-01-14 Saia-Burgess Inc. Permanent magnet brushless torque latching actuator
US20030025418A1 (en) 2001-07-31 2003-02-06 A Brushless Generator With Permanent Magnets Brushless generator with permanent magnets
US6531799B1 (en) * 1999-12-20 2003-03-11 Ford Global Technologies, Inc. Hybrid electric machine with two rotors, permanent magnet poles and controllable field current
US6707208B2 (en) * 2000-07-19 2004-03-16 Gary L. Durham Flux diode motor
US6956453B2 (en) * 2003-08-06 2005-10-18 Honeywell International Inc. Bi-stable magnetic latch
US7034499B2 (en) * 2003-10-03 2006-04-25 Rt Patent Company, Inc. Electromagnetic motor
US7538524B2 (en) * 1997-10-16 2009-05-26 Omnidyne, Inc. Generators and transformers with toroidally wound stator winding

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140726A (en) * 1997-07-03 2000-10-31 Minebea Co., Ltd. Radial gap cylindrical motor having an increased number of slots

Patent Citations (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678352A (en) 1970-11-06 1972-07-18 Gen Electric Compatible permanent magnet or reluctance brushless motors and controlled switch circuits
US4093905A (en) 1976-06-01 1978-06-06 Teletype Corporation Stepping motor using extended drive pulses
US4516048A (en) 1983-09-29 1985-05-07 The Superior Electric Company Stator with nonuniformly spaced teeth for rotating electromagnetic device
US4945268A (en) 1987-12-26 1990-07-31 Hitachi, Ltd. Permanent magnet type linear pulse motor
US4910475A (en) 1989-03-28 1990-03-20 Linex Technology Corporation Pole grouping for stepping motor
US5332488A (en) 1991-08-27 1994-07-26 Hitachi Magnetics Corporation Surface treatment for iron-based permanent magnet including rare-earth element
US5672925A (en) * 1992-08-06 1997-09-30 Electric Power Research Institute, Inc. Doubly salient variable reluctance machine with stationary permanent magnets or auxiliary field windings
US5825112A (en) 1992-08-06 1998-10-20 Electric Power Research Institute, Inc. Doubly salient motor with stationary permanent magnets
US5631512A (en) 1994-04-13 1997-05-20 Toyota Jidosha Kabushiki Kaisha Synchronous motor having magnetic poles of permanent magnet and magnetic poles of a soft magnetic material
US6051904A (en) 1997-10-07 2000-04-18 Valeo Equipments Electriques Moteur Rotary electric machine, especially an alternator for a motor vehicle
US7538524B2 (en) * 1997-10-16 2009-05-26 Omnidyne, Inc. Generators and transformers with toroidally wound stator winding
US6426577B1 (en) 1998-05-01 2002-07-30 Nisso Electric Corporation Thrust-controllable rotary synchronous machine
US6246561B1 (en) * 1998-07-31 2001-06-12 Magnetic Revolutions Limited, L.L.C Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same
US6342746B1 (en) 1998-07-31 2002-01-29 Magnetic Revolutions Limited, L.L.C. Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same
US6340857B2 (en) 1998-12-25 2002-01-22 Matsushita Electric Industrial Co., Ltd. Motor having a rotor with interior split-permanent-magnet
US6057622A (en) * 1999-01-21 2000-05-02 Lockhead Martin Energy Research Corporation Direct control of air gap flux in permanent magnet machines
US6013963A (en) * 1999-02-05 2000-01-11 Emec Energy, L.L.C. High efficiency electro-mechanical energy conversion device
US6373162B1 (en) * 1999-11-11 2002-04-16 Ford Global Technologies, Inc. Permanent magnet electric machine with flux control
US6531799B1 (en) * 1999-12-20 2003-03-11 Ford Global Technologies, Inc. Hybrid electric machine with two rotors, permanent magnet poles and controllable field current
US6410726B1 (en) 2000-01-12 2002-06-25 Tularik Inc. Arylsulfonic acid salts of pyrimidine-based antiviral
US6507257B2 (en) * 2000-03-31 2003-01-14 Saia-Burgess Inc. Permanent magnet brushless torque latching actuator
US6707208B2 (en) * 2000-07-19 2004-03-16 Gary L. Durham Flux diode motor
US20030025418A1 (en) 2001-07-31 2003-02-06 A Brushless Generator With Permanent Magnets Brushless generator with permanent magnets
US6956453B2 (en) * 2003-08-06 2005-10-18 Honeywell International Inc. Bi-stable magnetic latch
US7034499B2 (en) * 2003-10-03 2006-04-25 Rt Patent Company, Inc. Electromagnetic motor

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
International Search Report and Written Opinion, International Application No. PCT/US08/58521, mailed Aug. 4, 2008 (15 pages).
International Search Report and Written Opinion, International Patent Application No. PCT/US08/56240, mailed Aug. 1, 2008 (7 pages).
Stephen J. Chapman, Electric Machinery Fundamentals, 1991, Mc-Graw-Hill, Inc., 2nd edition, pp. 395-397. *

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090091198A1 (en) * 2007-10-05 2009-04-09 Rolls-Royce Plc Flux-switching machine
US8508095B2 (en) * 2007-10-05 2013-08-13 Rolls-Royce Plc Flux-switching machine
US8344843B2 (en) 2010-09-03 2013-01-01 Solid State Magnetics Corporation Flux transfer device
WO2012123937A1 (fr) * 2011-03-16 2012-09-20 Concept & Design Ltd. Moteur électrique push-pull planétaire
US9570956B2 (en) 2011-03-16 2017-02-14 Shalom Levin Planetary, push-pull electromagnetic motor
US8633628B2 (en) * 2011-08-22 2014-01-21 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US20130049494A1 (en) * 2011-08-22 2013-02-28 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US20130214623A1 (en) * 2011-08-22 2013-08-22 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US9800114B2 (en) 2011-09-16 2017-10-24 Persimmon Technologies Corporation Robot drive with radially adjustable sensor connection
US10882194B2 (en) 2011-09-16 2021-01-05 Persimmon Technologies Corporation Robot linear drive heat transfer
US8716909B2 (en) 2011-09-16 2014-05-06 Persimmon Technologies, Corp. Robot with heat dissipating stator
US10569430B2 (en) 2011-09-16 2020-02-25 Persimmon Technologies Corporation Low variability robot
US10538000B2 (en) 2011-09-16 2020-01-21 Persimmon Technologies Corporation Robot with linear drives and rotary drive
US11996742B2 (en) 2011-09-16 2024-05-28 Persimmon Technologies Corporation Robot drive with isolated optical encoder
US10800050B2 (en) 2011-09-16 2020-10-13 Persimmon Technologies Corporation Robot linear drive heat transfer
US10476354B2 (en) 2011-09-16 2019-11-12 Persimmon Technologies Corp. Robot drive with isolated optical encoder
US10792822B2 (en) 2011-09-16 2020-10-06 Persimmon Technologies Corporation Robot drive and wireless data coupling
US10020704B2 (en) 2011-09-16 2018-07-10 Persimmon Technologies Corporation Electrical connection through motor housing
US11469649B2 (en) 2011-09-16 2022-10-11 Persimmon Technologies Corporation Robot drive with isolated optical encoder
US11031850B2 (en) 2011-09-16 2021-06-08 Persimmon Technologies Corporation Robot drive with isolated optical encoder
US20130069450A1 (en) * 2011-09-16 2013-03-21 Persimmon Technologies, Corp. Robot Drive With Passive Rotor
US20130162061A1 (en) * 2011-12-23 2013-06-27 Samsung Electro-Mechanics Co., Ltd. Switched reluctance motor
US9608505B2 (en) * 2012-02-10 2017-03-28 Takaitsu Kobayashi Linear power generator
US20140375149A1 (en) * 2012-02-10 2014-12-25 Takaitsu Kobayashi Linear power generator
US20140021809A1 (en) * 2012-07-18 2014-01-23 Ut-Battelle, Llc Reluctance motor
US9502952B2 (en) 2012-10-12 2016-11-22 Persimmon Technologies, Corp. Hybrid motor
US10014738B2 (en) * 2013-02-22 2018-07-03 Ihi Corporation Magnetic wave gear device
US20160006304A1 (en) * 2013-02-22 2016-01-07 Osaka University Magnetic wave gear device
US11769680B2 (en) 2014-01-21 2023-09-26 Persimmon Technologies Corporation Substrate transport vacuum platform
CN105322739B (zh) * 2014-07-22 2019-08-27 通用电气公司 在真空压力浸渍期间防止定子永磁体退磁的系统及方法
US9673667B2 (en) * 2014-07-22 2017-06-06 General Electric Company System and method for preventing stator permanent magnet demagnetization during vacuum pressure impregnation
CN105322739A (zh) * 2014-07-22 2016-02-10 通用电气公司 在真空压力浸渍期间防止定子永磁体退磁的系统及方法
US20160028276A1 (en) * 2014-07-22 2016-01-28 General Electric Company System and method for preventing stator permanent magnet demagnetization during vacuum pressure impregnation
US10523098B1 (en) 2014-12-01 2019-12-31 Dale Bowen Progressive magnetic rotation motor
US10404135B2 (en) * 2015-02-10 2019-09-03 Indiana University Research And Technology Corporation High torque density electric motor and/or generator
US11682945B2 (en) 2016-02-15 2023-06-20 Indiana University Research And Technology Corporation High torque density electric motor/generator with rolling element
WO2017180216A1 (fr) * 2016-04-14 2017-10-19 Boaventura-Delanoe Paul Moteur électrique et générateur
US10608509B2 (en) 2016-10-17 2020-03-31 Roul Delroy MARTIN Rotatable electric machines
US11967871B2 (en) 2017-09-15 2024-04-23 University Of Utah Research Foundation Cogging-torque actuator
EP3687049A1 (fr) * 2019-01-24 2020-07-29 Norbert Isele Moteur, ensemble rotor-stator et utilisation permettant de faire fonctionner un moteur

Also Published As

Publication number Publication date
US20090160391A1 (en) 2009-06-25
WO2008109834A1 (fr) 2008-09-12

Similar Documents

Publication Publication Date Title
US7898135B2 (en) Hybrid permanent magnet motor
US11218038B2 (en) Control system for an electric motor/generator
US20200007016A1 (en) Brushless electric motor/generator
US7755241B2 (en) Electrical machine
US11967866B2 (en) System and method for controlling a multi-tunnel electric machine
US20080272664A1 (en) Permanent magnet electro-mechanical device providing motor/generator functions
CN100405734C (zh) 多相电机绕组的拓扑结构及控制
WO1997007583A1 (fr) Machine a reluctance variable a double saillant comportant des aimants permanents fixes ou des spires inductrices auxiliaires
US7843102B1 (en) Electrical machine
WO2009056879A1 (fr) Machines à réluctance à aimant permanent
EP0502831A1 (fr) Perfectionnement aux moteurs triphasés sans balais avec contrôle à demi-onde
JP5543186B2 (ja) スイッチドリラクタンスモータ駆動システム
US8581465B2 (en) Generator
CN102843008A (zh) 一种并列式混合励磁交流发电机
WO2019125347A1 (fr) Convertisseur électromécanique synchrone contrarotatif
US9831753B2 (en) Switched reluctance permanent magnet motor
JP2017225203A (ja) スイッチドリラクタンスモータ駆動システム
US8729745B2 (en) Multiple-phase linear switched reluctance motor
EP1147595B1 (fr) Machine electrique a aimants permanents avec commande d'economie d'energie
CN112787476B (zh) 基于交替极转子的集成式直流感应混合励磁无刷电机
RU105540U1 (ru) Модульная электрическая машина
RU2366063C1 (ru) Магнитоэлектрическая машина
JP6335523B2 (ja) 回転電機
US20240235295A1 (en) System and method for controlling a multi-tunnel electric machine
RU2422971C1 (ru) Индукторная машина

Legal Events

Date Code Title Description
AS Assignment

Owner name: QM POWER, INC.,NEW HAMPSHIRE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLYNN, CHARLES J.;REEL/FRAME:024199/0080

Effective date: 20070906

Owner name: QM POWER, INC., NEW HAMPSHIRE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FLYNN, CHARLES J.;REEL/FRAME:024199/0080

Effective date: 20070906

STCF Information on status: patent grant

Free format text: PATENTED CASE

FPAY Fee payment

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2552); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YR, SMALL ENTITY (ORIGINAL EVENT CODE: M2553); ENTITY STATUS OF PATENT OWNER: SMALL ENTITY

Year of fee payment: 12